American Idol moved on top this week edging out The Voice for the lead with adults 18-49. The week's top scripted show with adults 18-49 was Modern Family.
American Idol's Wednesday telecast was the most-watched program of the week. A repeat of NCIS was the most-watched scripted show of the week.
Primetime Broadcast Adults 18-49 Viewers for the week ending March 18, 2012:
| Rank | Shows | R=Repeat S=Special P=Premiere | Net | 18-49 rating | 18-49 Viewers (000) |
| 1 | American Idol-WEDNESDAY | FOX | 5.4 | 6952 | |
| 2 | VOICE | NBC | 5.2 | 6626 | |
| 3 | American Idol-THURSDAY | FOX | 4.6 | 5870 | |
| 4 | Modern Family | ABC | 4.5 | 5690 | |
| 5 | BACHELOR:AFTER FINAL ROSE(S) | S | ABC | 3.3 | 4192 |
| 6 | Grey'S ANATOMY | ABC | 3.0 | 3863 | |
| 7 | SURVIVOR: ONE WORLD | CBS | 3.0 | 3852 | |
| 8 | BACHELOR, THE | ABC | 2.9 | 3740 | |
| 9 | Once Upon A Time | ABC | 2.9 | 3764 | |
| 10 | Criminal Minds | CBS | 2.8 | 3598 | |
| 11 | CSI | CBS | 2.8 | 3564 | |
| 12 | Family Guy | FOX | 2.8 | 3543 | |
| 13 | New Girl | FOX | 2.8 | 3522 | |
| 14 | Amazing Race 20 | CBS | 2.7 | 3457 | |
| 15 | Desperate Housewives | ABC | 2.6 | 3265 | |
| 16 | CBS NCAA BSKBL CHMP-SA-4(S) | S | CBS | 2.5 | 3164 |
| 17 | CBS NCAA BSK CHP-BRG-PRFR(S) | S | CBS | 2.4 | 3053 |
| 18 | Happy Endings | ABC | 2.4 | 3011 | |
| 19 | OFFICE | NBC | 2.4 | 3024 | |
| 20 | Simpsons | FOX | 2.4 | 3093 | |
| 21 | SMASH | NBC | 2.4 | 3020 | |
| 22 | 60 Minutes | CBS | 2.2 | 2821 | |
| 23 | American Dad | FOX | 2.2 | 2875 | |
| 24 | COMMUNITY | NBC | 2.2 | 2823 | |
| 25 | TOUCH ENCORE 3/15 9P(S) | SR | FOX | 2.2 | 2818 |
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Primetime Broadcast Total Viewership for the week:
| Rank | Shows | R=Repeat S=Special P=Premiere | Net | # Viewers (LIVE+SD) (000) | HH RATING (LIVE+SD) | HH SHARE (LIVE+SD) |
| 1 | AMERICAN IDOL-WEDNESDAY | FOX | 18384 | 10.7 | 17 | |
| 2 | AMERICAN IDOL-THURSDAY | FOX | 16021 | 9.4 | 16 | |
| 3 | VOICE | NBC | 14515 | 8.4 | 13 | |
| 4 | NCIS | R | CBS | 12978 | 8.2 | 14 |
| 5 | CSI | CBS | 11706 | 7.5 | 13 | |
| 6 | Criminal Minds | CBS | 11427 | 7.3 | 11 | |
| 7 | NCIS: LOS ANGELES | R | CBS | 11334 | 7.3 | 11 |
| 8 | 60 Minutes | CBS | 10800 | 6.9 | 11 | |
| 9 | MISSING | P | ABC | 10603 | 6.8 | 11 |
| 10 | Modern Family | ABC | 10600 | 6.4 | 10 | |
| 11 | SURVIVOR: ONE WORLD | CBS | 10564 | 6.2 | 11 | |
| 12 | BACHELOR:AFTER FINAL ROSE(S) | S | ABC | 9866 | 6.7 | 11 |
| 13 | Grey'S ANATOMY | ABC | 9619 | 6.4 | 10 | |
| 14 | Good Wife, THE | CBS | 9579 | 6.3 | 10 | |
| 15 | Amazing Race 20 | CBS | 9545 | 5.8 | 9 | |
| 16 | BACHELOR, THE | ABC | 9233 | 6.1 | 10 | |
| 17 | Desperate Housewives | ABC | 9027 | 5.8 | 9 | |
| 18 | Once Upon A Time | ABC | 8688 | 5.0 | 8 | |
| 19 | TOUCH ENCORE 3/15 9P(S) | SR | FOX | 8574 | 5.2 | 8 |
| 20 | CSI: MIAMI | CBS | 8544 | 5.8 | 11 | |
| 21 | HARRY'S LAW | NBC | 7965 | 5.1 | 8 | |
| 22 | Hawaii Five-0 | R | CBS | 7932 | 5.1 | 8 |
| 23 | Two and a Half Men | R | CBS | 7648 | 5.0 | 8 |
| 24 | Body Of Proof | ABC | 7463 | 5.0 | 8 | |
| 25 | MIKE & Molly | R | CBS | 7273 | 4.8 | 7 |
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Nielsen TV Ratings: ©2012 The Nielsen Company. All Rights Reserved. All numbers are live viewing plus same day DVR viewing.
